Morgana is Miss Hardbroom's cat. She is sleek and black. Morgana was mentioned by name in The Worst Witch All At Sea. She is also mentioned (though not by name) in 'The Worst Witch Strikes Again', when Mildred accidentally pole vaults through HB's window, and when Miss Cackle starts to tell her off, she is also 'removing a jam tart from her shoulder and absent mindedly feeding it to Miss Hardbroom's cat.'
Morgana is described as a particularly beutiful, sleek black cat with olive-green eyes.